title: Imaging of carcinoma of the external auditory canal: a pictorial essay.
abstract: Carcinoma of the external auditory canal presents a challenge in management, largely due to limited experience in treating this rare disease and the lack of a universally accepted staging system. Prognosis is most dependent on the extent of local disease at presentation, while resection margin status is also a strong determinant of survival in post-operative patients. The intent of this pictorial essay is to review the pattern of tumour spread and highlight the value of imaging, particularly magnetic resonance imaging in pre-operative tumour mapping.
authors.affiliation: Department of Diagnostic Radiology, National University Hospital and Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
authors.forename: Cheng K
authors.initials: CK
authors.lastname: Ong
authors.forename: Uei
authors.initials: U
authors.lastname: Pua
authors.forename: Vincent F H
authors.initials: VF
authors.lastname: Chong
mesh_terms: D004424:Ear Canal / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D004428:Ear Neoplasms / Q000000981:diagnostic imaging / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D009367:Neoplasm Staging / Q000379:methods; D011379:Prognosis; D015996:Survival Rate; D014057:Tomography, X-Ray Computed